Air-operated testing device



` l 1,572,158 R. H. MUIELLER ET @Il AIR OPERATED TESTING DEVICE voriginal Filed Nov. 5, 1921 2 sheetssheetl M ln/0121115924 attoznaqa Feb. 9, 1926.0 1,572,158

R. H. MUELLER ET AL AIR OPERATEDA' TESTING DEVICE Origial File# NOV- 5. 1921 .2 Sheets-Sheet 2 (jmvenom Patented Feb. 9, 1926.

UNITED .STArEs PATENT' oFFiCE.

ROBERT I-I. MUELLER AND CHESTR W. HATI-IAWAY, OF DECATUR, ILLINOIS, AS:- SIGNORS TO .ADOLIPI-I MUELLER, TRUSTEE, 0F DECATUR, ILLINOIS.

AIn-oPnnaTnn TESTING DEVICE.

Original application filed November 3,

To all whom t may concern: v

Be it known that we, ROBERT H. MUELLER and CHESTER XV. HATHAWAY, citizens of the United States, residing at Decatur, in the county of Macon and State of Illinois, have invented new and useful Improvements 1n Air-Gperated Testing Devices, of which the following is a specification.

The present invention, which is a division of applicants copending application, Serial No. 512,696, filed November 3rd, 1921, has been. made the subject of a separate application under official requirement, and relates to testing apparatus for cocks and the like, and more particularly for use in testing for porosity and key leakage of angle cocks, and similar articles which have fluid passages therethrough.

The primary purpose of the invention consists in the provision of means for testing angle cocks, in which the inlet and outlet supplies may be positioned at any angle relative to each other, without necessitating any changes in the construction and opera tion of the machine, and without removing the cock from the machine.

Referring to the drawings, wherein is disclosed a physical embodiment of our in yention.

Figure 1 is a front elevational view of the device, parts of the structure being broken away for olearness of illustration.

Figure 2 is a view in side elevation substantially at right angles to the view shown in Figure 1.

Figure 3 is a sectional view taken substantially along the lines 3-3 of Figure 1.

Figure 4 is a sectional View taken sub-A stantially along the lines44 of Figure 2.

Referring to the drawings, wherein like numerals indicate like parts in the several views, 10 denotes a base member having a standard 11 and connected to any suitable support, such as 12 by the bolts 13. The base 10 has a recess boss 14 rinwhich is mounted a cock receiving seat or pad 15 of resilient or yieldable material, which ispreferably loosely mounted, as shown,-within 1921, Serial No. 512,696. Divided and this application led May 7,

1924. Serial No. 711,661. f

the recess so that in event of water getting beneath the pad it will not-be trapped, and

der 19 of any suitable type, and having within a reciprocating piston 20, which is given its thrust in one direction by fluid. pressure coming from the supply pipe 21, which is connected with any suitable source and provided with any suitable inlet andV exhaust valve controls, so that the operator Vat will can throw pressure against the piston 2O orrelease it. The piston 2O is actuated in the opposite direction, in the present disclosure, by the spring 22 which normally. tends to raise it. It is obvious that` if desired the piston could be operated by pressure in both directions by making the suitable connections as is common in constructions of this kind.

Attached tothe piston 20 in any snitabl manner is the thrust rod 23 which passes` through anyl suitable opening or vguide 24 at its point of eXit'from the piston chamber 19. In that vform of the invention where the lifting spring 22 is used to elevate the pision and its associated parts, the opening 24,! through which the thrust rod 23 passes will be of such dimension in cross section as will permit pressure to escape past the thrust rod 23 so that if the fluid should get below the piston it can escape and no opposing pressure will be created below the piston 20.

Secured to the lower end of the thrust rod 23 is the clamping member 25, which has depending from one side thereof forked arms 26, which are arranged to pass beneath the handle of the valve so as to hold it firmly during 'the testing operation.

The clamping member 25 is provided with an internally threaded recess 27, which receives a ccrrespondingly threaded portion of the thrust rod 23. The member 25 is adjustably secured to the thrust rod by reason of it having a longitudinal split 28 and a flat recess portion 29 formed in its outer periphery, through which extends a bolt 30. It will. be seen that the member 25 may be run up and down on the rod to shorten er lengthen its effective stroke vand that upon tightening' the bolt 30 the member will be tightened in its position, and danger of itsl movement on the screw threaded portion of the, thrust rod during the operation of the machine is eliminated.

Extending from one side of the Vbase 10, and-preferably secured thereto by any suitable means, such as the bolt 31 is the bracket 32. Mounted in suitable supports, such as',`

for example, the lug 3301i -the bracket' is a reciprocating head 34 having a recess'base 35 and a sealing pad 36 of a character simi-y larvto that described in connection withthe pad on the boss 14. yCentrally of the pad V`36is disposed the pipe or passage 37 coupled with the lateral branch passage 38, at' the outer end of which is mounted a cock or faucet 39, whichmay be turned to close the passage 38 and the central passage 37.

The head. 34 is provided with a thrust rod 40headed or otherwise suitably formed' at its rear end 41 so as to retain between the headed end and the lug 33-the spring- 42, which spring tends normally to keep the head 41 in retracted position. Pivotally mounted to the lug 43 on the bracket isl an actuating cam 44 having an operating handle 45, which, when thrown into its operating position=v1ill drive the'head 34 inwardly against the nipple ofV the cock. so that the 'yielding pad 36 will seal thernipplev,kand the cock will be in position yfor testing.

With the parts constructed L as shown and described, the operation oftesting the angle cock for porosity, and in the case; of key- 3ocks,.the leakage pastl the keys will be as follows:

The angleV cock 46 conventionally indie cated in dotted lines in Figure 1 will be placed in the position shown with its lower nipple 47 seated upon the pad 15over the fluid? pressure inlet 17 for the testing fluid, and the angularly disposed nipplek 43 shown at an angle greater than a righi;l angle to the body ofthe cock, will be brought into engageinent with the padV 36-on the head 34'by actuation of the lever 45 against the resistance of the spring 42. Obviously, the nip ple 48 may be at right angles lto the body of the cock or any other suitable angle, as the position of-thel work demands The forked arms26 ofthe clamping inember 25 will?r be brought into engagement with the top of the cock46- through they admission cf pressure from the pipe 21 onto the pisy ton 20, forcing the seat piston downward, together with the thrust rod 23 and the forked arms 26, which have been adjusted as to length of stroke for the particular type of cock beingk tested.

It will be seen that due to the compression exerted by the forked arms 26, the cock 46 will be securely held in position.

The testing fluid will then be admitted by the pipe17 to the interior of the cock body, and kif it be a key-cock,' the key will be turned to open position so that the testing fluid can lill the body of the cock. The faucet 39 at the end of the lateral passage will be'l closed so that there can be-no escape of fluid by the passage. The testing pressure can be runup'to the desired degree, and the operator may observe the cock under pressure and determine whether or not 'it is defective by reasony of porosity or fault in thefmaterial, for under the retained, pressure in the cock body, porosity will be shown by leakage throughany fault inthe ACock, and if there be any leaks-.ge about the` key so `as to permit the testing fluid to pass, it will be at once apparent by reason ofv How oi' drip from the faucet. Any suitable waste, not shown, may be provided for receiving the drip from the faucet 39. From the foregoing, it will be seen that there 'is provided a testing machine which may be conventionally used for testing both" for porosity and for key leakage of va-lve bodies, valve seats and the like, without re'- nioving the cock from the machine, and'that is adapted for handling angle cocks having their nipples positioned at any desired angle relative to each other without necessitating any radical changes in the constructionand operation of the machine.

It is to be understood that `llieforinto-f invention herein disclosed is mere-ly illustiative, andin no sense restrictive, and that such mechanical changes, other than thosc hereinl shown, may be' made without departingvfrom the range o-f the invention and the scope ofy the appended claims.v Further that the phrase fluid pressure includes' hydraulic or airpressiire.

`We claim:

1.111v apparatus for testing angle cocksand the like, the combination of a base; to receivev cock niipple and having a fluidpiessiire inlet, ai bracket secured to` the side of the base, a. movable pressure head on' said bracket having a fluid pressure outlet and adapted to ,engage the other nipple of the cock, means to normally hold said pressure head retracted, means for moving said head, and means to clamp the cock on said base. l

2. In apparatus for testing angle cocks and the like, the combination of a base to receive a cock nipple and having a fluid pressure inlet, a bracket secured to the side of the base, a movable pressure head on said bracket having a fluid pressure outlet and adapted to engage the other nipple of the cock, a spring normally holding said head retracted, means pivoted to saidr bracket for moving said head into engagement With the last mentioned nipple, and means to clamp the cock to said base.

3. In apparatus for testing angle cocks and the like, the combination of a base to receive a cock nipple and having a fluid pressure inlet, a bracket secured to the side of therbase, a movable pressure head on said bracket having a fluid pressure outlet and adapted to engage the other nipple of the cock, means for controlling flow through said outlet, a spring normally holding said pressure head retracted, and means for moving said head in opposition to the spring and into engagement with the cock nipple.

at. In apparatus for testing angle cocks and the like, the combination of a base to receive a cock nipple and having a fluid pressure inlet, a bracket secured to the side of the base, a movable pressure head on said bracket, having a fluid pressure outlet and adapted to engage the other nipple of the cock, means for controlling flovv through 'said outlet, a spring normally holding said pressure head retracted, and a cam pivoted on said bracket for actuating said head into engagement With the cock nipple.

5. In apparatus for testing angle cocks and the like, the combination of a base to receive a cock nipple and having a fluid pressure inlet, a bracket secured to the side of the base, a movable pressure rhead on said bracket having a fluid pressure outlet and adapted to engage the other nipple of the cock, a spring normally holding said head retracted, means pivoted to said bracket for moving said head into engagement with the last mentioned nipple, means to clamp the cock to said base, including a clamping member having a depending forked arm adapted to engage said cock and secure the latter in position on the base.

6. In apparatus for testing angle cocks for porosity and leakage, the combination of a base having a seat to receive a cock nipple and an inlet for fluid pressure, movable clampingmeans for securing the cock to the base, a movable pressure head'positioned on one side of said base to engage' the other nippleof the vcock and having a fluid pres-` sure outlet passage, and means for opening and closing said outlet passage.y

7; In apparatus for testing angle cocks for.

porosity and leakage, the Vcombination of a base having a resilient seat to receive a cock nipple and an inlet for fluid pressure, movable clamping means for securing the cock to the base, a normally retracted `movable pressure head having a resilient seat to receive the other nipple of the cock and having a fluid pressure outlet passage, and a control cock for said passage.

8. In apparatus for testing angle cocks and the like for porosity and key leakage, the combination of a base having a resilient seat to receive a cock nipple and an inlet for fluid pressure, a movableclamping member for securing the cock to said base, a movable pressure head positioned on one side of said base andy having afluid pressure passage, a spring normally holding said pressure head retracted, and a cam means for r moving said head.

9. In apparatus for testing angle cocks, the combination of a base to receive a cock nipple and having an inlet for fluid pressure, a clamping member for securing the cock to the base, a bracket on the side of said base, a pressure head longitudinally movable on said bracket and adapted to engage the other nipple of the cock, said pressure head having a fluid outlet passage, manually controlled means for moving said head in one direction, and means to automatically move said head in the opposite direction.

l0. In apparatus for testing angle cocks, the combination of a base to receive a cock nipple and having an inlet for fluid pressure, a clamping member for securingthe cock to the base, a bracket on thev side of said base, a pressure head longitudinally movable on said bracket and adapted to engage the other nipple of the cock, said pressure head having a fluid o-utlet passage, means for controlling flow through said out let, a spring normally holding said pressure head retracted, a cam mounted on said bracket, and an operating handle connected to said cam for moving said pressure head.

1l. In apparatus for testing angle cocks and the like for porosity and key leakage, the combination of a base having a seat to receive a cock nipple and an inlet for fluid pressure, a movable clamping member for securing the cock to' said base, a movable pressure head disposed to an angle to engage the other cock nipple, there being a fluid pressure outlet traversing said head, means for; controlling flovv through said outlet, a

spring normally acting to hold said pressure head retracted, and a cam actuated means for moving said head.

12. In apparatus for testing angle cocks and the like for porosity and key leakage,

the? combination of' a vhas@ lizwi'ngfaf resilient seat tcrrecewe ai Goek n'pplea-nd 11n-inlet for fluid pressurey a, movable clampi-nglmemfber htving wdlapending? forked? arm for: securing the-S0091; to' said base, L Iiiovable pressure headf disposed; 'ab an anglea-n'd inclined-f reizitive; to saidl'base se't' to engage thetliei"y co'uknippl'eikv sa1d`head having a resilient scat socket thereinl anda flu-1d pressure out# let traversing said healdf means for son'ilol-l mafl'ly actingr tof hldl said; pressure liieadf r'etract'ed, and aY @um actuwtd means fornrlowA lng;` said head.

In testimony rWh'ei'efjf' We have hereunto setvoui' hands. y

` ROBERT ILL MUELLER. Y

u CHESTER'- VVL HATHAVY. 

